Cash-register.



H. A. MARTIN. CASH REGISTER, APPLICATIQN FILED FEB-10,19%@- 4Patenned Supt. M3, 1917.

a SHEETS-SHEET 1.

H. A. MARUN.

CASH REGISTER, APPLscATmN FILED Fiamma.

1,240,234. meme@ sept. 1S, 1917.,

3 SHEETS-.SHEET 2.

H. A. MARHN..

CASH asmsnz.

PPUCATION FILED FEB. 10,1913.

Patented Sept. S 191i?.

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HAAKON A. MARTIN, 01E DAYTQN. HO, ASSIGN'OR TO THE NATONAL CASH REGSSTER COMPANY, OF DAYTCN, OHIO, A. CGRPORATDN QF 'Ol-IIL?, (INCRPORATED .'lhl' 1965.)

GASH-REGSTER.

Specifica-tion of Letters Patent.

Patented Sept. 18, 191'?,

Application tiled February 10, 1913." Serial No. 747,349.

To all wtomt may concern:

Be it known that I, Hannon A. Maurin, a citizen of the United States, residing at Dayton, in the county of Montgomery and State oi' Ohio, have invented certain new and useful mprovements in Cash-Rcgisters-, of which I declare the following to be a full, clear, and exact description.

This invention relates to cash registers and among its' main objects is the provision of a diiierential mechanism which shall operate with as little jar and strain to the machine as possible. Certain well known registering machines are arranged to d1sconnect the differential elements from their actuating devices at diierent'points of the strokes of the latter through the employment of keys or the like. Such constructions canse somevjar to the mechanism when the disconnectiontakes places ln the present construction, devices are provided whereby elements are given a constant extent of movement and a differential movement ohtained therefrom by varying the pivotal points. Thus the entire constant` stroke oi' the element may he employed and no danger of disconnection is found.

Another object of the invention is to provide a novel means for arresting keys to prevent simultaneous depression of keys in the same bank and also ltor locking a depressed key in depressed position lduring an opera` tion of the machine and otherwise preventing manipulation of keys during an' operation.

With these and incidental objects in view, the invention consists in certain novel features of construction and combinations of parts, the essential elements of which are set. forth in appended. claims, and a preferred form of embodiment of which is hereinafter described with reference to the drawings' which accompany' and form part of the specification.

Oi said drawings:-

,Figure l is a transverse vertical section of a cash register with the casing omitted showingT the differential mechanism and its connections 'to the driving mechanism and the accounting devices.

Fig. 2 is a sectional view of one of the banks of keys showing the manner in Awhich the keys'operate fulcruming plungers for the differential mechanism.

'.FlgY 3 1s an .enlarged side elevation of one of the banks oi' keys showing the key detente and key arresters and locking devices.-

Fig. et is an enlarged detail of the totalizer and its actuating' mechanism.

Fig. 5 is a detail of a cam foi'voperating certain indicator alining devices.

ln the present'im'e-ntion the differential mechanism is given positively an even motion requiring the saine time for operation, no matter what the amount is to be added. As before noted, certain registering mechanisms already known provide for discon-v necting;` the dierential elements from their operating devices at varying parts O the stroke or' the latter. rihus the di'erential element is moved at a constant speedthrough whatever extent of movement is given it and is suddenly stopped at the end ci" that movementn in the present case a constant number of degrees of rotation of the main operating shaft employed, no matter what the number to be added and thus Inovement of the parts is more even and the machine is not jarred. i

The register shown in the drawings includes a plurality 0i' banks of keys each bank of which is constructed to'control one denominational section of the operating mechanism. T he operating mechanism consists of levers and segment gears having connections to control certain' indicator'setting mechanism and Jfor driving a totelizing device. The driving mechanism has. connections Afor rocking one end of said levers an invariabie extent. rilhe other ends of said levers are pivoted to the segments and ordinai-ily when no keys are depressed, idly rock around the letters pivots. The keys have connections for fulcruming said levers at diiiiercnt points intermediate their ends, conseqnently when keys are depressed the levers rock around their key fulcrnms and thereby drive the segment gears to which they are pivoted at their upper ends. n this manner the segment gears receive differential movement and communicate the same to the indicator setting mechanism and to the totalizing device.

The keyboard consists of a plurality of banks oi keys, each bank being provided with a key detent having connections to operate a key arresting and locking device whereby when any key is depressed, a.- detent will be shifted end there'by move vthe arresting andv locking device to operative ositioii, said device operating to permit the de ression of only one key in a vhe indicator setting mechanism is novel in the present case and, s ecitically only, and a form of device for e ectin transfers in the totalizer substantially simi ar to that shown, is found in the prior art.

The main drive shaft 1 of the machine is shown in section in Fig. 1, and this shaft, as is usual in cash registers, is caused to make one rotation at each operation of the machine by any driving mechanism such as a motor, not shown in tlie present drawin s. For the purpose of driving the differential mechanism the shaft 1 carries fast a cam 2 having a groove 3 cut-therein for operating on a roller 4 pivoted on a pitman 5. The pitman is forked over shaft 1 at its rear end to be supported 'by the shaft, and at its forward end is ivoted by a pin 6 to an arm 7 fast to a roc shaft 8 journaled in the side frames 9. Fast to shaft 8 are a plurality of arms 10, one for each bank of keys, and the rear ends of which are each connected through a link 11 with differential lever members 12. The levers 12 are connected at their upper ends to segment gears 13 by pins 14 passing through slots 15 in the segment gears 13 which constantly mesh with the rack teeth on the upper end of the levers 43 which are`loosely mounted on a transverse shaft 44. The gears are loosely journaled at their upper ends on pins 16 carried by key supporting framesv `17 With this construction the rotation of shaft 1 causes .first a forward movement of pitman 5 and then a return to its normal position, as shown in the drawing. On thel forward movement of the pitman, shaft 8 is rocked, and thus through arms 10 pushes the links 11 upwardly, thereby rocking the levers 12 a certain angular extent upwardly around their pivots 14 to segment ears 13, provided no key is depressed. If eys are epressed the levers will be fulcrumed at points intermediate their pivotal connection .with links 11 and segment gears 13, consei quentl on operation of itman 5 the levers 12 wil rock around the ey controlled pivl ots and thereby differentially drive segment ears 13. 'The latter have connections for l riving the accounting device and controlling the indicator setting mechanism, as dev scribed farther on.

Each bank of keys consists of aplurality of keys 18 lslidably mounted in the frames 17 supported by the side frames 9. The keys are depressible against the action. of springs 19 compressedbetween lugs 20 on" the keys and flanges 21 of the key frames, and each key is provided .with a slot 22 surrounding a pm 23 on a vplunger 24, also slida'bly ragunted inl the key frame but to move transversely ofthe directionv of movement of the key, consequently slot 22 is inclined to the 27 ,fin the lever 12 for the corresponding bank. The outer end of the plunger enters a plate 28 fastened to the side of key' frame 17, as shown in Figs. 1' and 2, and is thus sup orted bythis plate and the key frame 17 uring the operation ot' the machine when the lever 12 is rocked around the plungke. It Will be seen that the levers 12 move tween the key frame 17 and the late 28 and are thus guided to move proper y.

Each key is provided with a laterally extending lug 29 for coperating with one of the inclined edges 30 of a key detent 31. The detent 31 is supported byl pins 32 on the key frame 17 passing throng slots 33 in the detent,thus permitting a slidin movement of the detent in the direction o its length. The inclines 30 are differentially dis osed with respect to lugs 29 and consequent y'the detent is forced upwardly differentially with respect to the keys, the uppermost or 1 key moving the detent nine times as far as the lowest or 9 key moves it. At the lower ends of inclines 30 are notches 34 serving to retain the depressed keys in their inner positions bya slight return movement of the detent when the depressed key arrives at its inner position. This return movement is accomplishedI by springs 35 which normally serve to retain the detents and members 26 o erated thereby in the position shown in frame by the pin 38 and hav-ing at its wei' end a slot 39 encircling a pin 40 on one of the arresting members 26, and the members 26 are provided with slots 41 through which pass fixed pins 42 on the key frames. When a ey is depressed a corresponding plunger 24 is projected through the slot 25 in the member 26. Simultaneously the key detent 31 is moved upwardly to an extent depending upon the particular key employed. Thus the plunger 24 constitutes a pivot around which the arresting member 26 may rock,

as its movement is limited by the pin 42.'

The Aupward movement of 'the arresting plate 26 serves to rock the llever 37 differentially in a clockwise direction. Thus its slot 39 moves more or less past the pin 40 ids in the arresting member 26. The movement f of this lever 37 would, in the absence of pin 42, carry the arresting member 26 in a. downward direction, or to the .left as shown in Fig. 3. However, the presence of pin 42 prevents this movement and therefore the v passing of slot 39 more or less past the pin 130 40 compels the arresting plate 26 to more in a counter-cloekwise direction around the projected plunger 24 as the center. flies the end of the member 26 surrounding pin 42 moves downward, as this is the direction of inclination of slot 39. The two sides of the arresting member 28 therefore pass in front of plungers on ad the other keys cept that depressed and prevent the depression of any of them7 whereby only one key in the bank may be depressed at a time. he object of having a diierential movement to the key detent 81 is to give substantially a uniform extent of rocking movement of the plate 26. The plungers 24 are at different distances from 'the pin 42 and therefore would cause different extents ol rotation of the plate 26, but the difference of distance ot' the plnngers from tliepin 42 is coinpensated for by the different extents'oif, move-- ment given the key detent plate` 81.

rlhe totalizer and its actuating devices are best shown in Fig. 4 and a brief description of these parts may neXt be given.

It has been explained how the levers 422 are given a differential movement depending` upon the keys depressed. Each of 'these levers carries at its lower end a rack (segment 465oarried on the lever 48 by pins 4.9i tast on the lever and projecting through curved slots 492 in the racks.' Each leve in addition to the segment rack 465 carries o. tripping` plate 478, these plates also being: carried on pins 491 which pass through slots 493 in the tripping plates. shaft 8 is a series of arms 471', the outer ends of which are normally enga ged a.; L-inst these tripping plates 47 Each'oi the totalizer elements is provided with. a pin 472 which, as the element passes from its i nine l to zero position, engages the projection of the corresponding arm 471 and rocks this arm slightly7 thereby forcing the tripping plate 478 toward the shaft 44 around which lever 43 rotates. A latohing plate 474 is carried on each lever 43, drawn by a spring as shown, so that a flange 4955 'thereon rests norma ly against the inner edge of tripping plate 478. n extension of the latching arm 474 is provided with a flange 484 normally engaging in a notch in the segment-rack 465. A lever 4(3(3 is also pivoted to the lever 48 and is normally drawn by a spring 4G?, thus tendingy to move the segment rack 465 through the distance l'ietween any two ot its teeth.

YWhen a totalizer wheel 48 passes from nine to zero its pin 472 engages the pro# jectio'n on arm '471 thereby inoving the tripping plate 478 toward the shaft 44. [is the flange 498 of the bitchingl pawl 474 is in en# gagement with this trip-ping plate 478. this latching arm is also nieve(` and this .tienne 494 releases the rack segrn'ient 465, whereupon the spring 467 mores the rack enough Loose en the carry the totalizer element of next higher order an additional step, thus completing or turning in the transfer.

To engage and disengage the totalizer elements with the segment racks, they are can riedon a rod 461 supported by two frame arms 462 carried by collars on the shaft 8'. To one of these collars an arm 464 is rigidly held and this arm is connected to a pitman which is provided with a roller 466 rid; ing1 in the cam `gfroove 467 of a boX cam 468. lt will be seen from Fig. 4 that the shape of this cam is such as to retain the totalizer out ot' engagement with the rack segments dnring' the setting stroke thereof, and to malntain it in engagement with these segments during their return stroke. Thus the totalirer elements. as vis requisite, will move in one direction only.

lt is necessary to reset the rack segments 465 after each transfer, and to this end a bar 482 is carried by frame arm 481 fast on a rod @ne of these Yframe arms is 'extended upwardly from the rod and Connected to a pitman 484 \vliicl1 oarries roller 485 riding in the second ram groove 486 in the disk 468. Ehe shape of this cam groove is such as to engagjie the bar 482 with any of the rack segments 485 which have been given a transfer increment and reset them against the tension of springs 467 substantially at the end or each operation ofV the machine. When the racks are so reset, the latehing pawls 474 again engage the rack segments and reand type carriers are operated by segment gears 13. The latter have forwardly extending arms 4'? to which are pivoted by pins 48 beams 49 connecting; the segment gears 13 with links 50 'which are pivoted by .pins

to the rear ends of the beams 49. The links 50 are pivoterl at their lower ends to .arms 51 tast on shafts 52. 'These shafts may have connections For setting type carriers, as is known in tl e art. The pivots connecting links 50 with beams 4S) also connect the bauis to segmenl gears 54 `journaled on the pivot pins lll and meshing with pinions 55 fast lo indicator drums 5G. The pins 53 ride in slots in the gears 54.

l/Vhen the beams 4h are rocked differentially around their pivots 53 by movement of seojment gears i8 the segment gears 54 are locked 57 fast to a rock shaft 58 operated by a cam 581 on shaft l and having connections to rock 4shaft 58 through arpitnian 59, a bell crank lever (il) pivoted on a rod 6l, and a link (32 connecting' the bell crank lever with an arm G3 tast to shaft 58. As the beams 49 are rocked around pivot pins 53 the rollers carried centrally by said beams are difrerentially ,positioned with respect to V- against movement by alining pawls .I sha ed cams 65 fast to a rock shaft 66. The

sha t 66 has fast thereto a crank arm 70 connected to a pitman 71. This pitman carries a roller 7 4 which rides in the groove 73 of a cam disk 72. The shape of this groove is such that the pitman is carried up and then restored at each operation of the machine. This upward movement of the pitman causes a forward movement of the cams 65 and thus engages some time during thev operation with the rollers 64 and restores them to their normal central position. -At this time vthe ends`48 of the beams 19 are held ri idly set and consequently the other ends 0ir the beams are compelled to rock, thus positioning the indicatorsv and the printing devices. It will be understood that durfing this movement the alining devices 57 are withdrawn from the indicator operating segments by the mechanism described. After the indicators are set the alining devices are returned to their locking position and remain thus until the succeeding operation of the machine, whereby the indicators are locked a ainst accidental movement: l

To en er a.y transaction itis necessary to depress the keys 1Sl corresponding in value to the amount of the transaction, and 'then to cause a single rotation of shaft 1 in a clockwise direction as viewed in Fig. 1. The depression' of the keys effects the shifting of the corresponding plungers 24 through the holes 27 in the differential levers 12. The

movement is impartedl .to the upper ends of;4 -the latter. The pins 14 on the levers by engagement with segment gears 13 at the slots 15 differentially rock the segment gears and through them differentially rocking segment gears 43 which carrv the actuators for the totalizer and also diflerentiall rockin beams ll9'around their pivots 53. ontinue rotation of drive shaft 1 results in the operationof cams and-thereby the differential positioning of ,the indicators and the type Toward the end 0f rotationv of carriers. y drive shaft 1 the detents 31and locking members 26 are restored to'normal position by a restoring device suitably constructed toV lift'detents 31, butnot shown.

From 'the foregoing description it will be Seen 4that the present invention provides an www extremely simple and positively 'operated differential mechanism.

While the form of mechanism herein shown and described is admirably adapted tol fulfil the objects primarily stated, 1t 1s to be understood that it is not intended to confine the invention to the one form of embodiment herein shown and described, 'as it is susceptible .of embodiment in various` forms, all coming within the scopeff Vthe claims which follow. l

What isclaimed is:

1. In a machine of the class described, the combination with accounting mechanism, of actuating mechanism therefor including a segment gear having a slot, a lever -80 ingto retain any key in depressed position,

plungers one for and moved by each key, and a plate adjusted by said detent plate into the paths of the plungers of all the undepressed keys.

43. In a machine of the class described, the combination with a bank of keys, of a key detent plate having inclined edges engaged and moved by the keys and serving to retain any -key in depressed position, plungers one for and moved by each key, and a plate adjusted by said detent plate into the paths of the plungers of the undepressed keys.

4, In a machine of the class described, the combination with a bank of keys and a supporting key. frame, of a key detent plate carried by the key frame, and moved by anykey, plungers moved by each .of said keys, and a second plate carried by said key frame and moved by said detent plate into the 'paths of Vthe plungers of the undepressed keys.

5. In a machine of the class described, the combination with albank of keys, and a key detent plate moved by.' anyT key 'of the bank, of plun gers movi'ed'by the keys, a second plate adjacent said plungers and throughk which the moved l pluvngers.l project to serve as piyots therefor, and connections whereby said ,key detent plate rotates said second platev'aroundthe plunger of the de ressed `key-rand--,-th erel )y into4 the paths of p ungers ofith n'depressed keys.

bank of depressible keys, elements arranged at equal distances along the length vof the lever, normally disconnected therefrom and hi n E machine of the'class described, the "combination with an Aactuating lever, of a eee. ing" meehaiiism eenvfeied by g. amie; even Y 7. in e machine ei' she eless desciibed, ehe Combination with en eeeeuitiiif; device, si en actuating lever for controlling; seid Iic-- eouiizing device, means .fer moving; one end ef seid ieyei' ibi'eugb e path ef inveziabie [weten-bl., e bank of keys each provided with e eem slet, anni elements provided with pins engaging in ehe sles el? their respective keys that upon reevemenboi any one bij said keys e eoiresgeending element Wilibe nic-ved ini-e, position 0 form fixieren@ fer eeueting 1eyer En e machine of the Giese 'esciibed, the combineieii with an eecounsii'ig n'ieeheliism, ef an ecua'ting ieyex? cemroiiiig; ehe seme, e benk et? depieesibie keys eeeh pievidefl with sie, and; eemens ei'renge eq'ue dis 2@ temes :delig tbe length ef seid. lever 'ee-imoiy ieeomieee thefeirom and pi 'dried pine engaging the slots ef heiif coi iespene'iing keys so that apen. ebree-sien of @ne 0f seid, keys the eoirespeneing eiement is moved; ei; fighi; eng es 'theieze e 'I 13e ehe ee: mit form e faim;

ieg evei, sies im@ ein eem so eenen-moese 'Lee miei pesieieii it te iieitmei geesiieii machine ef be dass (if eiibed, die wiii e fiiefeii" y iiioyeble eter); ee ,it connected keys tenti'eili l ferenia movement of sei member Wiii eseillaee the element ee e unifomi extent. 4J

i0. In e machine of the dass deseribei.

combination wih e, bank of keys, ei a detent piete movedv by seid keys and sei:V to retain :my key in depressed positiek, piling-ers one fer and. moved by each key, a V1:) ple'e adjusted by seid detent plate about the operated lplunger inte che paths 0i? the piungeis 'for all the undepressed keys, a' lever, and means for meyiug one end of seid ievei through a path of invariable exent, seid pungers being moved inte position te very the ement of moveniene ef he other' end, of seid lever.

il, iiemachme 0x" che dass describe(3l cembineien Wib e bunk of keys, o e ke deten'; plaie, having inclined edges en; und moved differentially by e keys, iid serving' to retaineny key in i fiesse @insb tion, piangere one foi and nieve@ by key, e member adjusted by said deeeiit plebe 530 and eepei'ating with said phmgeI-s se that the member is rocked te :i imiomi effen. about :my operated plunger into the pziebs of the pungers of the undepiessed k. je, evei, and ineens fm' moving; one end ci? Said ievei' through path ei' iilveiizibie e; en", seid piungers being muy@ inte position 11e iieiy'be exten 0i' movement 'the Gebe? end ef the lever.

n tesimeiiy Wbeeof my sigziazme "f 3 in ehe presence of two Witnesses.

HAAKGE A, MLRTN.

Vifiteesses I R. L5, GLAes, E?. E. HAMILTON., 

